It would seem to me that surface area is the key. Fractals or similar techniques? It says the material isn't important, so maybe some sort of crystal growth cou

It would seem to me that surface area is the key. Fractals or similar techniques? It says the material isn't important, so maybe some sort of crystal growth could do it? a kilowatt for a fridge is pretty good honestly, and it stacks vertically. Or you integrate it with the underside of solar panels for better yield. 1KW/"fridge" is a lot more than I was expecting.